CVE-2020-3487

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerabilities

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition of an affected device. These vulnerabilities are due to insufficient validation of CAPWAP packets. An attacker could exploit these vulnerabilities by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition on the affected device.

Múltiples vulnerabilidades en el procesamiento del protocolo Control y Provisión de Puntos de Acceso Inalámbricos (CAPWAP) del Software IOS XE de Cisco para los Controladores Inalámbricos Cisco Catalyst serie 9800 podrían permitir que un atacante no autenticado y adyacente causara una condición de denegación de servicio (DoS) de un dispositivo afectado. Estas vulnerabilidades se deben a la insuficiente validación de los paquetes CAPWAP. Un atacante podría explotar estas vulnerabilidades enviando un paquete CAPWAP malformado a un dispositivo afectado. Un exploit exitoso podría permitir al atacante hacer que el dispositivo afectado se estrelle y se recargue, resultando en una condición DoS en el dispositivo afectado

*Credits: N/A

CVSS Scores

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Adjacent

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-12 CVE Reserved
2020-09-24 CVE Published
2023-06-10 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-400: Uncontrolled Resource Consumption

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capwap-dos-TPdNTdyq	2020-10-06

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9115 Ap Search vendor "Cisco" for product "Catalyst 9115 Ap"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9117 Ap Search vendor "Cisco" for product "Catalyst 9117 Ap"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9120 Ap Search vendor "Cisco" for product "Catalyst 9120 Ap"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9130 Ap Search vendor "Cisco" for product "Catalyst 9130 Ap"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-40 Search vendor "Cisco" for product "Catalyst 9800-40"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-80 Search vendor "Cisco" for product "Catalyst 9800-80"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-cl Search vendor "Cisco" for product "Catalyst 9800-cl"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800-l Search vendor "Cisco" for product "Catalyst 9800-l"	-	-	Safe
Cisco Search vendor "Cisco"	Ios Xe Search vendor "Cisco" for product "Ios Xe"	-	-	Affected	in	Cisco Search vendor "Cisco"	Catalyst 9800 Embedded Wireless Controller Search vendor "Cisco" for product "Catalyst 9800 Embedded Wireless Controller"	-	-	Safe